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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 57 11021 9949 27 27 392 12496

Zulkarnain Zainal publications per year

The chart shows the history of publications by Zulkarnain Zainal between 1960 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Zulkarnain Zainal published across 66 years, from 1960 to 2025, averaging 7.5 papers a year. Output peaked at 38 publications in 2012. 13 of the 497 publications appeared in the last two years.

No. of publications
10 20 30
Bar chart. Horizontal axis: year, 1960 to 2025. Vertical axis: number of publications, 0 to 38. Peak 38 publications in 2012. 1960: 3 publications 1961: 1 publication 1962: 11 publications 1963: 6 publications 1964: 2 publications 1965: 1 publication 1966: 0 publications 1967: 0 publications 1968: 2 publications 1969: 1 publication 1970: 9 publications 1971: 8 publications 1972: 16 publications 1973: 8 publications 1974: 2 publications 1975: 1 publication 1976: 1 publication 1977: 4 publications 1978: 1 publication 1979: 0 publications 1980: 0 publications 1981: 0 publications 1982: 0 publications 1983: 0 publications 1984: 0 publications 1985: 0 publications 1986: 0 publications 1987: 0 publications 1988: 1 publication 1989: 0 publications 1990: 0 publications 1991: 0 publications 1992: 1 publication 1993: 1 publication 1994: 3 publications 1995: 2 publications 1996: 3 publications 1997: 1 publication 1998: 1 publication 1999: 3 publications 2000: 1 publication 2001: 9 publications 2002: 7 publications 2003: 3 publications 2004: 10 publications 2005: 18 publications 2006: 4 publications 2007: 13 publications 2008: 11 publications 2009: 20 publications 2010: 18 publications 2011: 29 publications 2012: 38 publications 2013: 24 publications 2014: 27 publications 2015: 25 publications 2016: 20 publications 2017: 20 publications 2018: 21 publications 2019: 16 publications 2020: 24 publications 2021: 20 publications 2022: 7 publications 2023: 6 publications 2024: 4 publications 2025: 9 publications
1960 2025

497 publications in total across all disciplines

View publications per year as a table
Zulkarnain Zainal: publications per year, 1960 to 2025
Year Publications
1960 3
1961 1
1962 11
1963 6
1964 2
1965 1
1966 0
1967 0
1968 2
1969 1
1970 9
1971 8
1972 16
1973 8
1974 2
1975 1
1976 1
1977 4
1978 1
1979 0
1980 0
1981 0
1982 0
1983 0
1984 0
1985 0
1986 0
1987 0
1988 1
1989 0
1990 0
1991 0
1992 1
1993 1
1994 3
1995 2
1996 3
1997 1
1998 1
1999 3
2000 1
2001 9
2002 7
2003 3
2004 10
2005 18
2006 4
2007 13
2008 11
2009 20
2010 18
2011 29
2012 38
2013 24
2014 27
2015 25
2016 20
2017 20
2018 21
2019 16
2020 24
2021 20
2022 7
2023 6
2024 4
2025 9
Total 497
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Zulkarnain Zainal publication distribution in Chemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Chemistry in 2026. The highlighted bar marks where Zulkarnain Zainal sits on this spectrum.

No. of scientists
250 500 750 1,000 1,250
Bar chart with 63 bars. Horizontal axis: publications, 61–80 to 1,295+. Vertical axis: number of scientists, 0 to 1,350. Most scientists, 1,350, have 161–180 publications. The last bar groups every scientist with 1,295 publications or more. The highlighted bar, 381–400 publications, is where this scientist sits. 61–80 publications: 66 scientists 81–100 publications: 302 scientists 101–120 publications: 623 scientists 121–140 publications: 918 scientists 141–160 publications: 1,218 scientists 161–180 publications: 1,350 scientists 181–200 publications: 1,344 scientists 201–220 publications: 1,281 scientists 221–240 publications: 1,216 scientists 241–260 publications: 1,100 scientists 261–280 publications: 979 scientists 281–300 publications: 939 scientists 301–320 publications: 764 scientists 321–340 publications: 643 scientists 341–360 publications: 628 scientists 361–380 publications: 522 scientists 381–400 publications: 459 scientists 401–420 publications: 397 scientists 421–440 publications: 327 scientists 441–460 publications: 270 scientists 461–480 publications: 265 scientists 481–500 publications: 252 scientists 501–520 publications: 201 scientists 521–540 publications: 185 scientists 541–560 publications: 148 scientists 561–580 publications: 148 scientists 581–600 publications: 132 scientists 601–620 publications: 114 scientists 621–640 publications: 104 scientists 641–660 publications: 91 scientists 661–680 publications: 92 scientists 681–700 publications: 73 scientists 701–720 publications: 57 scientists 721–740 publications: 54 scientists 741–760 publications: 67 scientists 761–780 publications: 45 scientists 781–800 publications: 46 scientists 801–820 publications: 39 scientists 821–840 publications: 32 scientists 841–860 publications: 36 scientists 861–880 publications: 29 scientists 881–900 publications: 26 scientists 901–920 publications: 24 scientists 921–940 publications: 14 scientists 941–960 publications: 23 scientists 961–980 publications: 28 scientists 981–1,000 publications: 15 scientists 1,001–1,020 publications: 29 scientists 1,021–1,040 publications: 12 scientists 1,041–1,060 publications: 19 scientists 1,061–1,080 publications: 12 scientists 1,081–1,100 publications: 6 scientists 1,101–1,120 publications: 8 scientists 1,121–1,140 publications: 12 scientists 1,141–1,160 publications: 5 scientists 1,161–1,180 publications: 6 scientists 1,181–1,200 publications: 14 scientists 1,201–1,220 publications: 7 scientists 1,221–1,240 publications: 2 scientists 1,241–1,260 publications: 6 scientists 1,261–1,280 publications: 4 scientists 1,281–1,294 publications: 6 scientists 1,295+ publications: 100 scientists
61–80 publications 1,295+

This scientist: 392 publications — 79th percentile

79% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,295 publications or more.

View publications distribution as a table
Number of Chemistry scientists by publication count, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
Publications Scientists This scientist
61–80 66
81–100 302
101–120 623
121–140 918
141–160 1,218
161–180 1,350
181–200 1,344
201–220 1,281
221–240 1,216
241–260 1,100
261–280 979
281–300 939
301–320 764
321–340 643
341–360 628
361–380 522
381–400 459 392
401–420 397
421–440 327
441–460 270
461–480 265
481–500 252
501–520 201
521–540 185
541–560 148
561–580 148
581–600 132
601–620 114
621–640 104
641–660 91
661–680 92
681–700 73
701–720 57
721–740 54
741–760 67
761–780 45
781–800 46
801–820 39
821–840 32
841–860 36
861–880 29
881–900 26
901–920 24
921–940 14
941–960 23
961–980 28
981–1,000 15
1,001–1,020 29
1,021–1,040 12
1,041–1,060 19
1,061–1,080 12
1,081–1,100 6
1,101–1,120 8
1,121–1,140 12
1,141–1,160 5
1,161–1,180 6
1,181–1,200 14
1,201–1,220 7
1,221–1,240 2
1,241–1,260 6
1,261–1,280 4
1,281–1,294 6
1,295+ 100
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Zulkarnain Zainal D-index placement in Chemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Chemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Zulkarnain Zainal sits on this spectrum.

No. of scientists
250 500 750 1,000
Bar chart with 61 bars. Horizontal axis: D-Index, 40–41 to 159+. Vertical axis: number of scientists, 0 to 1,051. Most scientists, 1,051, have 56–57 D-Index. The last bar groups every scientist with 159 D-Index or more. The highlighted bar, 56–57 D-Index, is where this scientist sits. 40–41 D-Index: 289 scientists 42–43 D-Index: 612 scientists 44–45 D-Index: 808 scientists 46–47 D-Index: 776 scientists 48–49 D-Index: 835 scientists 50–51 D-Index: 861 scientists 52–53 D-Index: 872 scientists 54–55 D-Index: 933 scientists 56–57 D-Index: 1,051 scientists 58–59 D-Index: 930 scientists 60–61 D-Index: 882 scientists 62–63 D-Index: 834 scientists 64–65 D-Index: 731 scientists 66–67 D-Index: 775 scientists 68–69 D-Index: 683 scientists 70–71 D-Index: 646 scientists 72–73 D-Index: 561 scientists 74–75 D-Index: 501 scientists 76–77 D-Index: 437 scientists 78–79 D-Index: 388 scientists 80–81 D-Index: 354 scientists 82–83 D-Index: 292 scientists 84–85 D-Index: 275 scientists 86–87 D-Index: 254 scientists 88–89 D-Index: 235 scientists 90–91 D-Index: 185 scientists 92–93 D-Index: 192 scientists 94–95 D-Index: 155 scientists 96–97 D-Index: 163 scientists 98–99 D-Index: 125 scientists 100–101 D-Index: 105 scientists 102–103 D-Index: 105 scientists 104–105 D-Index: 112 scientists 106–107 D-Index: 88 scientists 108–109 D-Index: 68 scientists 110–111 D-Index: 69 scientists 112–113 D-Index: 65 scientists 114–115 D-Index: 79 scientists 116–117 D-Index: 61 scientists 118–119 D-Index: 44 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 40 scientists 124–125 D-Index: 33 scientists 126–127 D-Index: 26 scientists 128–129 D-Index: 34 scientists 130–131 D-Index: 35 scientists 132–133 D-Index: 25 scientists 134–135 D-Index: 27 scientists 136–137 D-Index: 17 scientists 138–139 D-Index: 16 scientists 140–141 D-Index: 20 scientists 142–143 D-Index: 20 scientists 144–145 D-Index: 15 scientists 146–147 D-Index: 9 scientists 148–149 D-Index: 9 scientists 150–151 D-Index: 16 scientists 152–153 D-Index: 11 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 3 scientists 158 D-Index: 3 scientists 159+ D-Index: 98 scientists
40–41 D-Index 159+

This scientist: 57 D-Index — 39th percentile

39% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 159 D-Index or more.

View D-Index distribution as a table
Number of Chemistry scientists by D-index, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
D-Index Scientists This scientist
40–41 289
42–43 612
44–45 808
46–47 776
48–49 835
50–51 861
52–53 872
54–55 933
56–57 1,051 57
58–59 930
60–61 882
62–63 834
64–65 731
66–67 775
68–69 683
70–71 646
72–73 561
74–75 501
76–77 437
78–79 388
80–81 354
82–83 292
84–85 275
86–87 254
88–89 235
90–91 185
92–93 192
94–95 155
96–97 163
98–99 125
100–101 105
102–103 105
104–105 112
106–107 88
108–109 68
110–111 69
112–113 65
114–115 79
116–117 61
118–119 44
120–121 37
122–123 40
124–125 33
126–127 26
128–129 34
130–131 35
132–133 25
134–135 27
136–137 17
138–139 16
140–141 20
142–143 20
144–145 15
146–147 9
148–149 9
150–151 16
152–153 11
154–155 9
156–157 3
158 3
159+ 98
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Overview

Zulkarnain Zainal is affiliated with Universiti Putra Malaysia and is active in the fields of Materials Science and Engineering, with significant contributions in related subfields such as Materials Chemistry, Electrical and Electronic Engineering, and Electronic, Optical and Magnetic Materials. Their work also intersects with Renewable Energy, Sustainability and the Environment, as well as Mechanical Engineering.

Their research covers a variety of specialized topics that include:

  • Advanced Photocatalysis Techniques
  • Supercapacitor Materials and Fabrication
  • Quantum Dots Synthesis And Properties
  • Chalcogenide Semiconductor Thin Films
  • ZnO doping and properties
  • Gas Sensing Nanomaterials and Sensors
  • Adsorption and biosorption for pollutant removal

Zulkarnain Zainal has published papers in numerous venues, frequently contributing to:

  • Diffusion and defect data, solid state data. Part B, Solid state phenomena/Solid state phenomena
  • RSC Advances
  • Polymers
  • SSRN Electronic Journal
  • International Journal of Biological Macromolecules

Recent publications include:

  • Significance of nanomaterials in electrochemical sensors for nitrate detection: A review, 2021, Trends in Environmental Analytical Chemistry
  • Nanomaterials for the Treatment of Heavy Metal Contaminated Water, 2022, Polymers
  • Production of methyl esters from waste cooking oil and chicken fat oil via simultaneous esterification and transesterification using acid catalyst, 2020, Energy Conversion and Management
  • Novel pyrochlores in the Bi2O3-Fe2O3-Ta2O5 (BFT) ternary system: synthesis, structural and electrical properties, 2020, Journal of Materials Research and Technology
  • Insight into the synergistic photocatalytic-adsorptive removal of methyl orange dye using TiO2/chitosan based photocatalyst, 2020, International Journal of Biological Macromolecules

Frequent collaborators with whom Zulkarnain Zainal has co-authored multiple works include:

  • Hong Ngee Lim
  • Abdul Halim Abdullah
  • Mohd Haniff Wahid
  • Noor Nazihah Bahrudin
  • Zainal Abidin Talib

Best Publications

  • Bactericidal Activity of TiO2 Photocatalyst in Aqueous Media: Toward a Solar-Assisted Water Disinfection System.

    Chang. Wei;Wen Yuan. Lin;Zulkarnain. Zainal;Nathan E. Williams

  • Flexible Graphene-Based Supercapacitors: A Review

    W. K. Chee;H. N. Lim;Z. Zainal;N. M. Huang

  • Carbon-Based Nanomaterials/Allotropes: A Glimpse of Their Synthesis, Properties and Some Applications

    Salisu Nasir;Mohd Zobir Hussein;Zulkarnain Zainal;Nor Azah Yusof

  • Removal of basic and reactive dyes using ethylenediamine modified rice hull.

    Siew Teng Ong;Chnoong Kheng Lee;Zulkarnain Zainal

  • Encapsulation techniques for organic phase change materials as thermal energy storage medium: A review

    Tumirah Khadiran;Tumirah Khadiran;Mohd Zobir Hussein;Zulkarnain Zainal;Rafeadah Rusli

  • Performance of Flexible and Binderless Polypyrrole/Graphene Oxide/Zinc Oxide Supercapacitor Electrode in a Symmetrical Two-Electrode Configuration

    W.K. Chee;H.N. Lim;I. Harrison;K.F. Chong

  • Controlled release of a plant growth regulator, α-naphthaleneacetate from the lamella of Zn–Al-layered double hydroxide nanocomposite

    Mohd Zobir bin Hussein;Zulkarnain Zainal;Asmah Hj Yahaya;Dickens Wong Vui Foo

  • Characterization of TiO2–Chitosan/Glass photocatalyst for the removal of a monoazo dye via photodegradation–adsorption process

    Zulkarnain Zainal;Lee Kong Hui;Mohd Zobir Hussein;Abdul Halim Abdullah

  • Photocatalytic treatment of 4-chlorophenol in aqueous ZnO suspensions: intermediates, influence of dosage and inorganic anions.

    Umar Ibrahim Gaya;Abdul Halim Abdullah;Zulkarnain Zainal;Mohd Zobir Hussein

  • Advanced energy storage materials for building applications and their thermal performance characterization: a review

    Tumirah Khadiran;Tumirah Khadiran;Mohd Zobir Hussein;Zulkarnain Zainal;Rafeadah Rusli

  • Cathodic electrodeposition of SnS in the presence of EDTA in aqueous media

    Arniza Ghazali;Zulkarnain Zainal;Mohd Zobir Hussein;Anuar Kassim

  • Cathodic electrodeposition of SnS thin films from aqueous solution

    Zulkarnain Zainal;Mohd Zobir Hussein;Arniza Ghazali

  • Nanocomposite-based controlled release formulation of an herbicide, 2,4-dichlorophenoxyacetate incapsulated in zinc–aluminium-layered double hydroxide

    Mohd Zobir bin Hussein;Asmah Hj Yahaya;Zulkarnain Zainal;Loo Hee Kian

  • Removal of dyes using immobilized titanium dioxide illuminated by fluorescent lamps

    Zulkarnain Zainal;Lee Kong Hui;Mohd Zobir Hussein;Yun Hin Taufiq-Yap

  • Nanomaterials for the Treatment of Heavy Metal Contaminated Water

    Unknown

  • Photocatalytic degradation of p-cresol by zinc oxide under UV irradiation.

    Yadollah Abdollahi;Abdul Halim Abdullah;Zulkarnain Zainal;Nor Azah Yusof

  • Preparation and characterization of active carbons from oil palm shells

    M.Z. Hussein;R.S.H. Tarmizi;Z. Zainal;R. Ibrahim

  • CeO2–SiO2 supported nickel catalysts for dry reforming of methane toward syngas production

    Yun Hin Taufiq-Yap;Sudarno;Umer Rashid;Zulkarnain Zainal

  • Development of antiproliferative nanohybrid compound with controlled release property using ellagic acid as the active agent

    Mohd Zobir Hussein;Samer Hasan Al Ali;Zulkarnain Zainal;Muhammad Nazrul Hakim

  • Photocatalytic removal of 2,4,6-trichlorophenol from water exploiting commercial ZnO powder

    Umar Ibrahim Gaya;Umar Ibrahim Gaya;Abdul Halim Abdullah;Mohd Zobir Hussein;Zulkarnain Zainal

  • Chemical bath deposition of tin selenide thin films

    Z Zainal;N Saravanan;K Anuar;M.Z Hussein

Frequent Co-Authors

Mohd Zobir Hussein
Mohd Zobir Hussein Universiti Putra Malaysia
Hong Ngee Lim
Hong Ngee Lim Universiti Putra Malaysia
Yun Hin Taufiq-Yap
Yun Hin Taufiq-Yap Universiti Putra Malaysia
Nay Ming Huang
Nay Ming Huang Xiamen University Malaysia
Wan Md Zin Wan Yunus
Wan Md Zin Wan Yunus National Defence University of Malaysia
Shuzi Hayase
Shuzi Hayase University of Electro-Communications
Umer Rashid
Umer Rashid UCSI University
Alagarsamy Pandikumar
Alagarsamy Pandikumar Council of Scientific and Industrial Research
Nor Azowa Ibrahim
Nor Azowa Ibrahim Universiti Putra Malaysia
Thomas J. Webster
Thomas J. Webster Northeastern University

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